Bump activeadmin from 4.0.0.beta5 to 4.0.0.beta6

Bumps [activeadmin](https://github.com/activeadmin/activeadmin) from 4.0.0.beta5 to 4.0.0.beta6.
- [Release notes](https://github.com/activeadmin/activeadmin/releases)
- [Changelog](https://github.com/activeadmin/activeadmin/blob/master/CHANGELOG.md)
- [Commits](activeadmin/activeadmin@v4.0.0.beta5...v4.0.0.beta6)

---
updated-dependencies:
- dependency-name: activeadmin
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile

@@ -43,7 +43,7 @@ gem 'bootstrap', '~> 5.3', '>= 5.3.2'
 gem 'dartsass-rails', '~> 0.5.0'
 gem 'dartsass-sprockets', '~> 3.1'
 gem 'simple_form'
-gem 'activeadmin', "4.0.0.beta5"
+gem 'activeadmin', "4.0.0.beta6"
 gem 'base64'
 gem 'redcarpet'
 

Gemfile.lock

@@ -56,8 +56,9 @@ GEM
       erubi (~> 1.11)
       rails-dom-testing (~> 2.2)
       rails-html-sanitizer (~> 1.6)
-    activeadmin (4.0.0.beta5)
+    activeadmin (4.0.0.beta6)
       arbre (~> 2.0)
+      csv
       formtastic (>= 3.1)
       formtastic_i18n (>= 0.4)
       inherited_resources (~> 1.7)
@@ -124,6 +125,7 @@ GEM
     concurrent-ruby (1.2.3)
     connection_pool (2.4.1)
     crass (1.0.6)
+    csv (3.3.0)
     dartsass-rails (0.5.0)
       railties (>= 6.0.0)
       sass-embedded (~> 1.63)
@@ -172,8 +174,8 @@ GEM
       railties (>= 6.0)
       responders (>= 2)
     io-console (0.7.2)
-    irb (1.12.0)
-      rdoc
+    irb (1.13.1)
+      rdoc (>= 4.0.0)
       reline (>= 0.4.2)
     kaminari (1.2.2)
       activesupport (>= 4.1.0)
@@ -279,7 +281,7 @@ GEM
     redis-client (0.22.1)
       connection_pool
     regexp_parser (2.9.0)
-    reline (0.5.4)
+    reline (0.5.5)
       io-console (~> 0.5)
     responders (3.1.1)
       actionpack (>= 5.2)
@@ -344,7 +346,7 @@ PLATFORMS
   x86_64-linux
 
 DEPENDENCIES
-  activeadmin (= 4.0.0.beta5)
+  activeadmin (= 4.0.0.beta6)
   altcha-rails
   base64
   bootsnap